Global Network Engineer — EVPN/VXLAN & Automation Lead

Marks Sattin

Greater London

On-site

GBP 90,000 - 120,000

Full time

4 days ago

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Job summary

Marks Sattin, a global financial services organisation, seeks a Network Engineer to lead design, deployment, and evolution of its world-wide network spanning data centres, trading environments and enterprise locations.

You will own end-to-end network project delivery, guide third-party connectivity turn-ups, and act as the senior technical escalation point for major incidents, driving automation and AI-enabled improvements.

Qualifications

CCNP Routing & Switching or equivalent
Foundational wireless certification required
Degree in Computer Science/Engineering or equivalent
Strong routing/switching design across Junos, Arista EOS, Cisco IOS (BGP/OSPF/EIGRP)
Hands-on EVPN/VXLAN design on Arista
Knowledge of Palo Alto firewalls and F5 load balancers preferred
Automation/scripts using Python and Ansible in production networks
Calm under pressure with incident leadership, RCA, remediation
Experience mentoring and producing clear technical docs

Responsibilities

Design and implement data centre and enterprise network solutions (new builds, refreshes, migrations)
Deliver end-to-end projects: HLD/LLD, build, testing, cutover, handover
Turn up and support third-party services including CDN, extranet, VPN
Lead routing and switching design across Juniper, Arista, Cisco platforms
Design, build and support EVPN/VXLAN fabrics using Arista EOS
Act as senior escalation for major incidents: triage, RCA, fixes
Build and maintain automation/tools using Python, Ansible, Git
Improve observability and operations with Grafana, Splunk, ServiceNow, AI tools
Maintain infrastructure hygiene: upgrades, EOL, audits
Mentor junior engineers and ensure cross-region handovers